1251425532503 has 16 divisors (see below), whose sum is σ = 1310987897856. Its totient is φ = 1192294810080.

The previous prime is 1251425532451. The next prime is 1251425532517. The reversal of 1251425532503 is 3052355241521.

It is a cyclic number.

It is not a de Polignac number, because 1251425532503 - 2¹⁰ = 1251425531479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251425534503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26672501 + ... + 26719377.

It is an arithmetic number, because the mean of its divisors is an integer number (81936743616).

Almost surely, 2^{1251425532503} is an apocalyptic number.

1251425532503 is a deficient number, since it is larger than the sum of its proper divisors (59562365353).

1251425532503 is a wasteful number, since it uses less digits than its factorization.

1251425532503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51454.

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 1251425532503 in words is "one trillion, two hundred fifty-one billion, four hundred twenty-five million, five hundred thirty-two thousand, five hundred three".